EDP Sciences
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Erratum
This article is an erratum for: [this article]

Issue
A&A
Volume 578, June 2015
Article Number C1
Number of page(s) 2
Section Cosmology (including clusters of galaxies)
DOI https://doi.org/10.1051/0004-6361/201321880e
Published online 29 May 2015

In Table 1 of Feindt et al. (2013), the p-values for the dipole fit method were calculated incorrectly. While the χ2-function was fully minimized for the real data, it was evaluated on an inadequately large grid for the simulated data. As there were no errors in the χ2-values of the real data, the best-fit values are unaffected.

The correct p-values are listed in the table below. Since we observed fluctuations in the results between runs using 5000 random realizations, we increased the number of realizations to 250 000. The main conclusions of the paper are not affected by the changed numbers, because the main result of this method – that there is no evidence for a backside infall behind the Shapley Supercluster – remains the same. The higher p-value in the third redshift bin (0.045 <z < 0.06) does not contradict this observation.

We would like to thank Jeppe Trøst Nielsen for bringing this error to our attention and confirming the corrected numbers.

Table 1

Reconstructed directions (in Galactic coordinates) and corrected p-values of maximum anisotropy according to a dipole fit in different redshift bins for the Union2 and SNfactory datasets and their combination.

References


© ESO, 2015

All Tables

Table 1

Reconstructed directions (in Galactic coordinates) and corrected p-values of maximum anisotropy according to a dipole fit in different redshift bins for the Union2 and SNfactory datasets and their combination.

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